Q: haskell-process-load-file with additional environment variables

I would like to customize the behavior of `..load-file` (`C-c C-l`) such that the resulting shell loads environment from a given shell script (e.g. the system `.bashrc`). Unfortunately my ELisp is nonexistant so I don't understand how the Emacs internals work.

Question on SO :

https://stackoverflow.com/questions/67940815/emacs-haskell-interactive-mode-in-custom-shell

Thank you !

Start by reading the haskell-process-load-file entry point and the linked Stack Overflow discussion to understand how the shell environment is currently selected. Done means defining a clear, maintainable way to load environment variables from a user-provided shell script, or documenting why the requested customization is not supported.

Written by the indexing model from the issue text.